Steam generating device



June 28, 1932.

G. H. CHAMBERLAIN, JR

STEAM GENERATING DEVICE Filed March 30, 1928 1 r// Mm.

fli l uuwun 1 gwvmloz 620K636 fi? CHAMBERLAIN-5i Patented June 28, 1932UNITED STATES, PATENT OFFICE GEORGE H. CHAMBERLAIN, JR, OF ELYBIA, OHIOI STEAM GENERATING DEVICE I 7 Application filed March 30, 1928. SerialNo. 266,083.-

municates with the bottom. of the water-containing chamber. Suitableconnection is provided at the point 6 for the spiral copper tube 7 whichis housed within the fire chamber in side the inner wall 2. The upperend of the 65 tube 7 has connection through the upperend of the innerwall 2 with the steam chamber in the dome portion already referred to.

As will be observed from the drawing, the diameter of the spiral of thetube 7 decreases 00 upwardly while the inclination of the convolutionsofthe spiral increases accordingly. The purpose of this feature is torender as uniform as possible the rate oftravel of the water through thetube at all points.

' The burner 8 has connection with the gas supply pipe 9 and is arrangedimmediately under the bottom end of the spiral tube 7 and surrounds thelower vertical portion of the tube 7, as'clearly indicated in Fig. 2.This 7 burner may be supported in any suitable manner. The taperingfformof the inner Wall 2 tends to converge the heat as it rises and in thisway, serves jto compensate for the distance of the upper part of thetube 7 from the burner. As a result, the degree of heating is renderedmore nearly uniform at all points of the tube 7. The waste gases fromthe burner are discharged through the outlet 10. so

The water which passes through the tube 7 is rapidly converted intosteam which is discharged through the upper end of the tube 7 andreceived into the steam chamber under the dome. The baffle 11 is of asubstantially circular form and has its under side curved upwardly andoutwardly from a central point, as indicated in Fig. 2. so as to deflectthe steam as it passes through the upper end 00 of thetube 7. Thisbafile not only prevents a suddengush of steam through the dome butalsopermits any wet steam or condensation to find its way back into theWater cham- V ber rather than be transmitted out through the steam pipeto the radiators. The bafile This invention relates to an improved steamgenerating device.

The steam generating systems which are familiarly used in the heating ofprivate residences and other buildings, comprise a boiler and a furnacefor raising the temperature of the water contained in the boiler to thedegree necessary for the hot water or steam system, the entire body ofwater being heated as a whole and at one time. As a result, thedevelopment of the necessary degree of steam is comparatively slow.Furthermore, this old system occupies a considerable area in thebasement or wherever installed and it is comparatively inefficient withregard to the amount of heat required for a given temperature in a givensystem.

Accordingly, it is the object of the present invention to devise a steamgenerating device which is not only compact and more attractive inappearance than the old system, but which is at the same time, moreeflicient with respect to the speed with which steam may be developedand supplied to the system of radiators; and at the same time, to devisesuch a system which is designed in such-a manner as to conserve the heatemployed for development of the steam.

Other objects will appear from the following description and claims whenconsidered together with the accompanying drawmg. Y I

Fig. 1 is a partial view of a heating system of which my improved steamgenerating device forms a part; and Fig. 2 isavertical sectional view ofthe steam generating device itself.

The main body, of my improved device comprises a single casting whichhas the outer wall 1 and the inner wall 2, the space between these twowalls serving as a chamber for the water and the steam which is receivedin the upper portion thereof. As clearly indicated in the drawing, theouter wall is of substantially cylindrical shape with its top portionformed as a dome, while the inner wall 2 tapers :upwardly and inwardly.The water supply pipe is indicated by reference numeral 3 and isprovided with a suitable valve 4 and pipe connection 5 com- 11 may bemounted by means of legs upon the top of the inner wall 2 and may beinserted for installation through the handhole in the top of the dome.This handhole is closed by 1 the cover 12, into which is threaded thepipe reference numeral 14, and the water of con-- densation is returnedthrough the pipe to the water supply. Thus, the circuit is complete, andthis device may be operated for a comparatively long time withoutrequiring replenishment of water.

This device is provided also with the water gauge 16, the vacuum andsteam gauge 17,

the pop valve 18, the thermostat 19, and the thermostat control motor20, together with the pilot 21'. I

In actual use, the water chamber is filled to the proper point, asindicated, for instance, in Fig. 2, and the heat then applied for thedevelopment of steam. Because of the par ticular structure andarrangement of the comparatively small spiral tube, through which passesa comparatively fine thread of water immediately above the heat, steamis developed at an exceedingly rapid speed.

This is made possible by virtue of the fact' that this comparativelyfine thread of water is subjected to the full intensit of the heat, thesurface area of the water eing thereby increased to an approximatemaximum for exposure to the heat, and this comparatively fine stream ofwater is moved at a comparativel high rate of speed so that a certainportion of the water is at one instant developed into steam and is atonce conveyed as steam to the steam chamber or dome so as to permit afresh supply of water to be subjected in the same manner to the samedegree of heat. In other words, a greatly increased surface area ofthelwater is subjected inthe form of a comparatively fine and rapidlymoving thread to the full intensity of the heat instead of subjecting alarge body ofwater for a comparatively long time to the heat, as is trueof the old system.

Furthermore, with the present jacketed arrangement, in which the waterchamber surrounds the fire chamber, there is. conserved a-large portionof the. heat which would otherwise be lost.

a It is to be understood thatiwith thei thermostat arrangement heredisclosed, the de-' vice may be set for the desired temperature and theautomatic control. de 'nded upon in the same manner as already own inother heating systems. i.

Thls device may be supported 1r on thele 22 anda heat-insulating I? gscover23 is provided about the main bodyo the steam generating device. Ifso desired,the dome portion may be -formed separately from the maincylindrical fiody' portion, although as here shown,

the entire body portion including the inner and outer. walls throughoutthe entire height there0f, 1s'- formed as ahsingle casting. Suit-.water-siipply ipe cqnnfiib a ch mlier.

able connections are provided for the several pipes, as indicated in thedrawing.

The present device recommends itself be cause of its compact form andconsequentl neat appearance and also because of its big degree ofefficiency in conserving the heat thereby reducing the waste of heatunits, an

also because of the comparatively hi h rate of speed with which thesteam may e generated for distribution throughout the radiator system.It is to be understood, furthermore,that this device may be employed notonly in connection with radiator s stems for heating residences, etc.,but is ca a le ofgeneral application and may be use for the'generationand distribution of steam wherever desired. T

Furthermore, with proper odification, my present device, withthe samegeneral principle and high de cc of efliciency, may be adapted for usein t e development of hot water, instead of steam, for a hot waterheat-7 2. A steam generating device comprising a water and steam chamberhaving'spacedinner and outer walls, a re-entrant heating chamber withinsaid inner. wall, an upwardly tapering, spiral fluid-conveying coil saidheating chamber, theinclination of the successive convolutions of saidspiralprogressively increasing towards theto'p of the coil,

' a water supply pipe having connection to the lower ends of the saidchamber and coil and afiording communication between said chamber andcoil so as to'su' ply water from the chamber to the coil, said nieationwith said chamber through the up--- per end of said so asito deliversteam to saidchamber, chamber having a steam outlet, andfluid-circulating pipe connections be'tween said outlet and said Intestimony whereof, reby aflix my signature:"-

. GEORGE H. CHAMBERLAIN, JR.

the bottom 0011 having cornmlle I16

